Update deprecation message for Azure Automation Update Management

[psaswata]

PR Checklist

• Explain your changes, so people looking at the PR know what and why, the code changes are the how.

• Update deprecation message for Azure Automation Update Management

• Validate your changes using one or more of the testing methods.

• Changes Tested using Workbook in Portal.

If adding or updating templates:

• post a screenshot of templates and/or gallery changes
  
  

• ensure your template has a corresponding gallery entry in the gallery folder

• If you are adding a new template, add your team and template/gallery file(s) to the CODEOWNERS file. CODEOWNERS entries should be teams, not individuals

• ensure all steps have meaningful names

• ensure all parameters and grid columns have display names set so they can be localized

• ensure that parameters id values are unique or they will fail PR validation (parameter ids are used for localization)

• ensure that steps names are unique or they will fail PR validation (step names are used for localization)

• grep /subscription/ and ensure that your parameters don't have any hardcoded resourceIds or they will fail PR validation

• remove fallbackResourceIds and fromTemplateId fields from your template workbook or they will fail PR validation

[vanessabruwer]

These updates were merged in another PR, this PR no longer needed